boom lock lever  动臂止动手柄

boom lock valve  动臂止动阀

boom cylinder lock  动臂油缸锁

boom hold lock  动臂保持止动

boom raise cylinder lock valve  动臂提升缸止动阀

boom swing lock pin  动臂回转止动销

boom transport lock  动臂运输锁

boom transport lock group  动臂运输锁组件

crutch boom [= boom rest  帆杆榈架; 吊杆榈架

boom socket [= boom step]  杆窝; 杆座; 储存程控

cargo boom {single travelling boom}  吊货杆

centershift lock pin lock position  转盘中心移动锁定销锁止位置

3-boom hydraulic rock drilling jumbo  三臂凿岩台车

a baby boom in the last Year of the Dragon  龙年效应; 狂欢节

additional bending moment on derrick boom  吊杆附加弯矩

adjustable boom  可调吊臂

Anchor Boom  抛锚杆; 穿透式电子显微镜

Articulated Boom  铰链式臂; 铰接动臂

articulated boom platform  曲臂工作台